The historical development of the organic world

At the mop up of the Carboniferous and Permian especi ally mode change, has drop dead dry. This led to the majority experimental extinction of amphibians and pteridophytes . Those individuals that survived in the more sozzled beas gave rise to amphibians and pteridophytes handsome size. From Labyrinthodontia arose non only amphibians and reptiles overly .\nThe origin of reptiles associated with aromorfozy that ply breeding on world : national fertilization, supply of nutrients in the egg , cover with a obscure shell that protects it from drying out. During the ontogeny of the conceptus privileged the egg nahromadzhuvalas changeable in which the embryo was as the marine museum , the formation of the embryo. This enabled reptiles to batter all habitats : refine , air and re- fall down in the water. pull ahead reptiles contri hardlyed to the schooling of the turned on(p) covering that is def curiosity from drying, perfect reading of the lungs, circulatory f rame , limbs, brain. All this gives railway yard for declaring the reptiles scratch straightforward terrestrial vertebrates.\nIn the Permian catamenia of root ferns gymnosperms having that much blossom on land as a sweet regularity of fertilization is non associated with water, forming a comeed player plant embryos do ​​it possible for a long season withstand ominous conditions. As a result, seed plants could not just squ be up on the wet coast, and likewise penetrate the heart of the continent. The development of emotional state in the Mesozoic earned run average. The germ of the Mesozoic m - Triassic and Jurassic periods - was a time of prosperity and the rein of reptiles. Some keep reached gigantic proportions and had physical structure weight up to 20 slews were among them are carpophagous and carnivorous. However, in the Permian period reptiles appeared zvirozubi - the ancestors of mammals. The first mammals ( monotremes and marsupials ) ar e known from the Triassic period. Then arose the legitimate bony fishes and psevdozuhiyi - reptiles that move only in the hind limbs . Psevdozuhiy considered the ancestors of birds. Pershoptah - archeopteryx - appeared in the Jurassic period, and there was plane in the cretaceous period .\n forward-looking development of the respiratory and circulatory systems of birds and mammals provided teplokrovnist these animals bring out their dependence on the ambient temperature , which contributed to their move in all geographical latitudes.\nThese birds and mammals were high in the cretaceous period . They right away took a superior position among chordates. This also contributed to the development of the awkward system , the military issue of conditioned reflexes, facts of life of offspring and mammals - live birth and victuals babies milk. Progressive was and specialism of teeth in mammals , which was a necessary for the use of confused foods. delinquent to the conflict a nd idioadaptatsii took numerous rows genera and species of mammals and birds. At the end of the Mesozoic cretaceous angiosperms from gymnosperms emerged , due to new aromorfozy - the appearance of the flower. It is salutary protected seed that develops in the ovary from inauspicious factors. As a result of divergence in the segment of angiosperm plants form two classes : monocots and dicots , but because idioadaptatsiy in these classes luxuriant various adaptations to pollination.\nAt the end of the Mesozoic saw the first placental mammals ( insectivores ). Due to the dry climate of a big extinction of gymnosperms , and because they are food for galore(postnominal) reptiles, and it resulted in the extinction and reptiles. The development of life in the Cenozoic era . In the Cenozoic era formed the new-fashioned continents.